First, you can add --launch-agent rsh to the command line and that will have OMPI use rsh.

It sounds like your remote nodes may not be seeing your OMPI install directory. Several ways you can resolve that - here are a couple:

1. add the install directory to your LD_LIBRARY_PATH in your .cshrc (or whatever shell rc you are using) - be sure this is being executed on the remote nodes

2. add --prefix=path-to-install on your cmd line - this will direct your remote procs to the proper libraries

Ralph

On Mar 5, 2009, at 10:18 AM, justin oppenheim wrote:

Maybe I should also add that the programmy_mpi_executable is locally installed under the same root directory as that under which openmpi-1.3 is installed. This root directory is NSF mounted on the working nodes.